Evaluation of related factors affecting stability and survival rate of dental implants (meta-analysis of retrospective study)

Abstract

Aims: evaluate survival rate of dental implants. Determine correlations between bone density and stability. Determine which intervention to dental implant that increase stability.

Materials and methods: Retrospective study of patients receiving implants in dental implant unit in educational hospital of collage of dentistry /Baghdad University during period October 2012- October 2015. Individual data meta-analysis of implants stability using different interventions, which Are bone morphogenetic proteins, immediate dental implant, Ridge splitting, simvastatin drug, Platelet-Rich Plasma, Piezosurgery and control group.

Results: survival rate was 98.33%. Implant length and posterior location statistically significant effect on achieving high stability in control group. Posterior location statistically significant increase primary stability. After 2 months of surgery comparing interventions and control group show simvastatin(P<0.001) increase stability and among variables diameter, length and mandibular location statistically significant increase stability. After 3 month simvastatin(P<0.001) and  Bone morphogenetic proteins(P=0.005) increase stability and mandibular location, length and diameter increase stability. After 4 months Piezosurgery statistically significant lowering stability (P=0.004), and diameter statistically significant increase stability.

Conclusions:  High survival rate achieved. No significant effect of variables on failure rate of implants. Simvastatin and Bone morphogenetic proteins reduce healing time and improve stability but Piezosurgery lowering stability compered to control. Posterior location affected primary stability but length and diameter increase secondary stability. Bone density had no effect on primary and secondary stability.